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Wiki · ATEX and combustible dust

ATEX zones.

Areas where an explosive dust atmosphere can occur are classified as zone 20, 21 or 22; for gas, zone 0, 1 or 2. The employer classifies the zones, and the machine’s marking must cover the zone it works in.

6zones: 3 for dust, 3 for gas

In this entry

3 short parts.

Part1The zonesHow often an explosive atmosphere occurs. Part2The machineCategory and EPL in the marking. Part3Related entriesMore on the same topic.
The zones

Zones for dust and for gas.

The employer classifies hazardous areas into zones and prepares an explosion protection document.

The time intervals in the table are indicative: an aid to risk assessment, not absolute thresholds.

The machine

The marking must cover the zone.

Choose by the zone the machine will work in, then check the marking and limits on each product page.

Some models are marked for gas only, not for dust zones. ACD models are for combustible dust, but the machine itself must not stand in an ATEX zone.

ATEX dust collectors by zone
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The wiki gives general explanations. Always check the marking and the manual of your machine.

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